#include <iostream>
#include <algorithm>

using namespace std;

int main() {
    int N, M;
    cin >> N >> M;

    int max_side = 0;

    for (int K = 1; K <= 1000; K++) {
        int white = (K * K + 1) / 2;  // Fehér csokis
        int dark = K * K / 2;         // Étcsokis

        if ((white <= N && dark <= M) || (dark <= N && white <= M)) {
            max_side = K;
        } else {
            break;
        }
    }

    cout << max_side << endl;
    return 0;
}